Additional information
| Variants | Distant Wall Card at 3 Metres, Near and Distant Cards Set, Near card at 33cm |
|---|
Howell Phoria Cards
These cards allow direct measurement of the distance and near phorias in real space or with a phorpter. The patient simply has to tell which number the arrow points to. Any odd number (in yellow) shows esophoria while the even numbers (in blue) shows exophoria. An AC/A can quickly be determined with trial lenses.
Near card is about 12″ wide.
Distance chart is about 24″ wide.
IMPORTANT NOTE: This current item we have does not come with prism stick. Just the card itself.
